Respiratory mask



FIG. 1 is a rear perspective view of a respiratory mask according to ourdesign;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

Where included, the use of stippling and shading is provided to showcontrast in materials and/or to differentiate between different areas ofthe design.

The broken lines immediately adjacent the shaded areas represent thebounds of the claimed design while all other broken lines representenvironmental structure and are for illustrative purposes only; thebroken lines form no part of the claimed design.

CLAIM The ornamental design for a respiratory mask, as shown anddescribed.